How to use the pngjs.PNG.prototype function in pngjs
To help you get started, we’ve selected a few pngjs examples, based on popular ways it is used in public projects.
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GridSpace / grid-host / src / image.js View on Github 
const BMP = require('bmp-js');
const PNG = require('pngjs').PNG;
PNG.prototype.pixAt = function(x,y) {
let idx = (x + this.width * y) * 4;
let dat = this.data;
return [
dat[idx++],
dat[idx++],
dat[idx++],
dat[idx++]
];
};
PNG.prototype.averageBlock = function(x1,y1,x2,y2) {
let val = [0, 0, 0, 0];
let count = 0;
for (let x=x1; xconst BMP = require('bmp-js');
const PNG = require('pngjs').PNG;
PNG.prototype.pixAt = function(x,y) {
let idx = (x + this.width * y) * 4;
let dat = this.data;
return [
dat[idx++],
dat[idx++],
dat[idx++],
dat[idx++]
];
};
PNG.prototype.averageBlock = function(x1,y1,x2,y2) {
let val = [0, 0, 0, 0];
let count = 0;
for (let x=x1; xpngjs
PNG encoder/decoder in pure JS, supporting any bit size & interlace, async & sync with full test suite.
